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Demonstrate and make illustrations that show how viruses can appear as foreign invaders in the blood.
Difficulty: Elementary school
Dry ice is frozen Carbon Dioxide, or CO2, which is a gas under standard temperature and pressure conditions. The atmosphere contains about .035% of this gas. CO2 is a greenhouse gas, which means it absorbs light at infrared wavelengths. An increase in the concentration of this gas would, some scientists believe, cause an increase in the atmosphere's average temperature. The high concentration
Difficulty: Middle school
This experiment was conducted to ascertain how air pressure affects the rate at which helium gas escapes from latex balloons.
Difficulty: Middle school
By following these steps, you will have created the conditions necessary for cloud formation: water vapor in the air, smoke particles for water to collect on, and cooling of the air by lowering the air pressure within a bottle.
Difficulty: Elementary school
The purpose to this activity is to demonstrate to the students the direct affects of pressure and temperature on cloud formation.
Difficulty: Elementary school
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